 On 17 April 1065, after roughly ten months of occupation, the Moors easily retook the city.Thibaut, the Burgundian leader, died, possibly of wounds received on campaign, while returning to France after the loss of the city in 1065.Historian Reinhart Dozy first began a study of the War in the mid-nineteenth century based on the scarce primary sources, mainly Amatus and Ibn Hayyan.